Centrifugal pump cavitation phenomenon: More keyword search: Centrifugal pumps
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1 sewage pump, the use of temperature of about 80 degrees, pump pressure rose to normal after the pump open the pump pressure is normal, about 10 minutes rapid decline in pump pressure, accompanied by noise, vibration, cavitation occurs, check the sewage station valve closed ,
2 material pump, about 90 degrees of material easy to gasify the organic matter Pump open after the pump pressure rose to normal, due to feed small pump outlet, the pump outlet opening small, normal pump pressure, pump pressure decreased about 30 minutes, accompanied by noise vibration, Occurrence of cavitation phenomenon The above phenomenon occurs, you will find two situations occur:
1, one is the opening of the valve is not large;
2, the other is the pump inlet and outlet material temperature was significantly increased than the original found in these two cases of cavitation occurs because the outlet valve opening is not enough or not caused when the outlet valve is not open or opening hours, the material obtained from the pump Energy is not promptly sent away, that is, the kinetic energy of materials is converted into heat energy, so that the material temperature increases, when reaching a certain temperature cavitation occurs in the pump body.
After analyzing the reasons for the clear solution to the pump outlet plus a return line, open the appropriate back to open the pump valve, there have been no cavitation.